A wear-resistant and tensile-resistant power cable and a preparation method thereof

Abstract

The present invention discloses a wear-resistant and tensile-resistant power cable and a preparation method thereof, which relates to the technical field of power cables, and comprises a wire core, wherein the interior of the wire core is a stranded wire structure formed by twisting a plurality of copper wires, the exterior of the wire core is coated with a cross-linked polyethylene insulating tube, and the centering component is fixedly mounted on the outer surface of the wire core. The wear-resistant and tensile-resistant power cable and the preparation method thereof achieve the goal that the interior of the special-shaped tube is filled with hemp rope for centering and stabilizing the overall structure, the interior of the special-shaped tube is filled with silicone coating, and an inner layer centering structure is formed after the coating is shaped, and the inner side surface of the special-shaped tube and the space between the special-shaped tube are filled with easy-flowing cable particles, and the cable particles improve the overall stability of the cable. At the same time, when the outer layer protective structure is broken by tension, the inner layer centering structure will not be damaged by tension, and the problem that the tight connection between the outer layer protective structure and the inner layer centering structure of the cable easily causes the cable as a whole to be pulled apart, causing serious accidents, is solved.

Description

Technical Field

[0001] The invention relates to the technical field of power cables, in particular to a wear-resistant and tensile-resistant power cable and a preparation method thereof. Background Art

[0002] Traditional cables often need to be stretched during installation, and they also need to be stretched during construction or other situations. The existing cables have large overall rigidity, which makes it difficult to pull them during stretching. After stretching, the cables are also difficult to restore to their original shape, and even break, causing certain safety hazards. The existing cable usage environment is complex. When users perform a series of operations such as wiring, the cables will come into contact with other objects, causing friction and abrasion of the cable skin. After a long time, the skin is easily directly damaged, affecting the overall use. The Chinese patent announcement number is: CN115954144B, which discloses "A self-warning anti-stretching wear-resistant cable". In this patent, the wear-resistant sleeve is used to sleeve the cable body. The wear-resistant sleeve is made of wear-resistant rubber material. At the same time, the reinforcing wires 1 and 2 are wear-resistant mechanisms to increase wear-resistant properties. The reinforcing ring is a flexible tube for load-bearing protection to prevent external heavy objects from squeezing. When the cable body is pulled, the roller contacts the ground, so that the cable body moves under load through the roller, speeding up the movement of the cable body while reducing the problem of the cable body being stretched by friction when moving.

[0003] Existing wear-resistant and tensile-resistant power cables and their preparation methods have problems in structural design, such as the tight connection between the outer protective structure of the cable and the inner centering structure, which can easily cause the entire cable to be torn, resulting in serious accidents, and the raised protective wear-resistant structure on the outer surface of the cable can cause excessive resistance when the cable is dragged, resulting in wear and tear. Summary of the invention

[0004] The present invention provides a wear-resistant and tensile-resistant power cable and a preparation method thereof, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A wear-resistant and tensile-resistant power cable, comprising a core, the interior of the core is a stranded wire structure made of multiple copper wires twisted together, the exterior of the core is coated with a cross-linked polyethylene insulation tube, and further comprising:

[0006] A centering component, the centering component is fixedly mounted on the outer surface of the wire core, the outer surface of the centering component is fixedly connected with a barrier component, the centering component is used for positioning between multiple wire cores, the barrier component is a tubular structure supported by a metal material, and the outer surface of the barrier component is fixedly connected with a sheath;

[0007] A fixing mechanism, wherein the fixing mechanism is fixedly installed at the end surface of the barrier component, and a protective component is fixedly connected to the outer surface of the fixing mechanism, and the protective component is used for external protection when the cable is dragged as a whole;

[0008] A joining mechanism, the joining mechanism is fixedly mounted on the inner side of the fixing mechanism, and the joining mechanism is used for fixing the end face of the wire core and guiding the joining of the wire core and the cable connector;

[0009] The centering component includes a special-shaped tube, which is fixedly installed on the outer surface of the wire core, the outer surface of the special-shaped tube is fixedly connected to the limiting tube, the inner side surface of the limiting tube is fixedly connected to an extension plate, the end of the extension plate away from the limiting tube is fixedly connected to the limiting strip, the inner side surface of the extension plate is fixedly connected to a plastic strip, and the inner side surface of the limiting tube is fixedly connected to a spring sheet.

[0010] Preferably, the gap between the special-shaped tube and the wire core is filled with silicone rubber coating, the gap between the special-shaped tube and the limiting tube is filled with hemp rope and cable filling particles, the gap between the sheath and the limiting tube is filled with silicone rubber coating, the limiting tube, the barrier assembly and the sheath form an outer protective structure, the fixing mechanism is used to seal and fix the protective structure, a plurality of glue injection ports are provided on the surface of the sheath, which are used to inject silicone coating into the position between the limiting tube and the sheath, and after the silicone coating is fixed, a sealed protective structure is formed to prevent external gas and liquid from entering and causing insulation interference, and the special-shaped tube blocks the plurality of wire cores.

[0011] Preferably, the barrier assembly comprises an open hole ring, the open hole ring is sleeved on the outer surface of the limiting tube, one side of the surface of the open hole ring is fixedly connected with a bending cylinder, and the side of the bending cylinder away from the open hole ring is provided with an inner concave end.

[0012] Preferably, the barrier assembly also includes a support rod, one end of which is fixedly connected to a sphere, and the other end of the support rod is fixedly mounted on the surface of an opening ring, and a metal sleeve is fixedly connected to the surface of the support rod, and the opening ring is used to join the bending cylinder and the metal sleeve, and the outer surface of the opening ring is in close contact with the inner side surface of the sheath, and the inner surface of the opening ring is in close contact with the outer surface of the limiting tube, and the position between the limiting tube and the sheath is poured with shaping silicone coating, and the openings on the surface of the opening ring are conducive to the flow and filling of the coating, and the extension plate and the limiting strip are used to limit the special-shaped tube, and the cooperation between the special-shaped structure of the special-shaped tube and the limiting tube effectively improves the overall deformation resistance of the cable, and prevents multiple cores from being squeezed and deformed against each other when the cable is under pressure.

[0013] Preferably, the fixing mechanism comprises a fixing block, the fixing block is fixedly installed at an end surface position of the blocking component, a shell is fixedly connected to a surface of the fixing block, and a rectangular frame is fixedly connected to a surface of the shell.

[0014] Preferably, the fixing mechanism also includes a spring body, one end of which is fixedly mounted on the inner side surface of the rectangular frame, the other end of the spring body is fixedly connected to a guide block, the outer surface of the shell is fixedly connected to a protective tube, the barrier assembly as a whole is a skeleton structure formed by a plurality of annular metal structures rotatably connected, each skeleton unit is connected by rotation, a plurality of open ring sleeves are arranged between the limiting tube and the sheath, the end face of the barrier assembly is fixedly mounted on the surface of the fixing block by welding, the limiting tube and the special-shaped tube pass through the fixing block and extend to the joint mechanism for fixation, and the ball is embedded in the concave end for rotational installation.

[0015] Preferably, the end face of the wire core is provided with a stripping end, the joining mechanism comprises a connecting shell, the connecting shell is fixedly mounted on the bottom of the conducting block, and the stripping end of the wire core extends to the inner side face of the connecting shell.

[0016] Preferably, the coupling mechanism also includes a disk body, the surface of which is fixedly connected with an extension hole, the disk body is fixedly installed on the inner side surface of the connecting shell, the surface of the disk body is fixedly connected with a threaded barrel near the stripping end, the stripping end passes through the connecting shell and the disk body to the inside of the threaded barrel, the spring body couples the rectangular frame with the guide block, so that the connecting shell and the shell body can be elastically connected, the end face of the center tube extends to the inside of the special-shaped tube, the center tube is used to pour silicone coating into the inside of the special-shaped tube, so that the special-shaped tube and the multiple wire cores are centered and aligned, and the end face of the edge tube extends inwardly to the inside of the limiting tube, the edge tube is used to pour cable filling particles to the position between the inner side of the limiting tube and the special-shaped tube.

[0017] Preferably, a center tube is fixedly connected to the middle position of the disk body surface, and an edge tube is fixedly connected to the position of the disk body surface near the edge, the end faces of the center tube and the edge tube both extend to the inner side surface of the fixing mechanism, and the bottom end of the pin is welded and installed on the inner side surface of the fixing block. The obstruction of the pin forms a larger gap between the fixing block and the support ring, and the structure between the two fixing blocks is divided into an internal centering structure and an external protective structure. The fixing block fixes the two end faces of the external protective structure. When the cable is used for dragging, the surface of the cable is in direct contact with the ground, the outermost layer of the external protective structure, namely the sheath and the silicone coating are easily worn, and the connection between the fixing block and the shell is easily torn, resulting in poor sealing.

[0018] Preferably, the protection component comprises a latch, the end face of which is fixedly mounted on the inner side face of the fixed block, one end of the latch away from the fixed block is fixedly connected to a support ring, and the surface of the support ring is rotatably connected to a drag reducing ball.

[0019] Preferably, the protection component further comprises a compression ring, which is sleeved on the outer surface of the support ring, the surface of the pin is fixedly connected with a steel wire strip, and the surface of the steel wire strip is fixedly connected with a wire ring.

[0020] A method for preparing a wear-resistant and tensile-resistant power cable comprises the following steps:

[0021] Step 1, wire core manufacturing, at room temperature, draw the copper rod into copper wire, heat and keep the copper wire, and then cool it naturally, twist the copper wire by twisting multiple single wires to form a copper stranded wire, use a traction machine to pull the copper stranded wire to be coated into the injection molding extruder to coat it with hot-melt cross-linked polyethylene material, and form a cross-linked polyethylene tube after cooling and shaping, thereby completing the preparation of the wire core, and opening a stripping end on the end face of the wire core;

[0022] Step 2: Install the centering structure. Put plastic and rubber particles into the injection molding extruder. The hot melt plastic is formed into a limit tube and a special-shaped tube with a special-shaped cross-section through a die. During the extrusion molding process, the plastic strip is embedded into the inner side of the limit tube near the middle, and the spring sheet is embedded into the inner side of the limit tube near the edge. The formed special-shaped tube is pulled through the inner side of the limit tube to complete the installation of the wire core centering structure.

[0023] Step 3: Install the protective structure. The perforated ring is welded and fixed on one side of the inner concave end of the bending cylinder. A plurality of spheres are embedded inside the inner concave end. A plurality of support rods are fixed on the surface of the metal sleeve of the annular structure. The end faces of the support rods are then welded to the spheres. The protective structure is then sleeved on the outer surface of the limit tube as a whole, and the sheath is sleeved on the outside of the protective structure as a whole.

[0024] Step 4: pouring and shaping. Fix the end faces of the limiting tube and the special-shaped tube on the surface of the connecting shell. At this time, the middle tube extends to the middle position of the inner side of the special-shaped tube, and the edge tube extends to the position between the limiting tube and the special-shaped tube. Pour silicone paint into the inside of the middle tube, pour cable filling particles into the inside of the edge tube, and pour silicone paint into the injection hole of the sheath. After the paint cools, the overall shaping of the cable is completed.

[0025] The present invention provides a wear-resistant and tensile-resistant power cable and a preparation method thereof. The present invention has the following beneficial effects:

[0026] 1. The wear-resistant and tensile-resistant power cable and its preparation method, the interior of the special-shaped tube is filled with hemp rope for centering and stabilizing the overall structure, the interior of the special-shaped tube is filled with silicone coating, and the inner layer centering structure is formed after the coating is shaped, and the inner side of the special-shaped tube and the space between the special-shaped tube are filled with easy-flowing cable particles, and the cable particles improve the overall stability of the cable. At the same time, when the outer layer protective structure is broken by tension, the inner layer centering structure will not be damaged by tension, which solves the problem that the tight connection between the outer layer protective structure and the inner layer centering structure of the cable can easily cause the cable to be torn as a whole and cause serious accidents.

[0027] 2. The wear-resistant and tensile-resistant power cable and its preparation method, the plastic strip and the spring sheet are embedded in the interior of the limiting tube, which increases the rigidity of the limiting tube made of plastic material. At the same time, the cable as a whole can be easily bent and transported without being easily torn. The ball is rotatably installed inside the concave end, and the metal sleeve, the perforated ring and the bending cylinder form a skeleton structure, which can effectively reduce external impact damage and make the cable easy to bend.

[0028] 3. The wear-resistant and tensile-resistant power cable and its preparation method, the outer surface of the limiting tube is tightly fitted with the inner surface of the inner surface of the fixing block and the rectangular frame, when the silicone coating is poured between the sheath and the limiting tube, the space between the sphere and the concave end is filled and shaped, after the silicone coating is cooled and shaped, when the cable is bent as a whole, the space between the sphere and the concave end can still be bent to a certain extent, but due to the limitations of the metal sleeve and the bending cylinder, the cable is difficult to be torn, thereby effectively improving the overall tensile performance of the cable.

[0029] 4. The wear-resistant and tensile-resistant power cable and its preparation method have the flow characteristics of the cable filling particles so that there is no tight connection surface between the special-shaped tube and the limiting tube. When the outer part of the cable as a whole is subjected to a large pulling force, the elastic force of the spring body prevents the connecting shell from being subjected to a large pulling force. Even if the protective structure of the cable as a whole is pulled apart, since there is no rigid connection between the connecting shell and the shell, the wire core will not be pulled apart and damaged, thereby avoiding major accidents caused by leakage.

[0030] 5. The wear-resistant and tensile-resistant power cable and its preparation method place multiple drag-reducing balls in the inner groove of the support ring, and then press the compression ring onto the outer surface of the support ring, so that the multiple drag-reducing balls are limited. When the cable is dragged, the drag-reducing balls are in direct contact with the ground to reduce frictional resistance. After the debris on the ground enters the steel wire, it will be guided out through the pin, thereby effectively reducing the frictional resistance encountered by the cable when being dragged, and solving the problem that the raised protective wear-resistant structure on the outer surface of the cable will cause the cable to wear and tear due to excessive resistance when being dragged. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a flow chart of a method for preparing the wear-resistant and tensile-resistant power cable;

[0032] Figure 2 It is a stereoscopic diagram of the wear-resistant and tensile-resistant power cable of the present invention as a whole;

[0033] Figure 3 A three-dimensional diagram of the interior of the wear-resistant and tensile-resistant power cable of the present invention;

[0034] Figure 4 It is a schematic diagram of the structural connection between the centering component and the barrier component of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the centering component of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the barrier component of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0038] Figure 8 It is a structural schematic diagram of the joint mechanism of the present invention;

[0039] Fig. 9 It is a schematic diagram of the structural connection between the fixing mechanism and the joining mechanism of the present invention;

[0040] Fig.10 It is a schematic diagram of the structure of the protection component of the present invention.

[0041] In the figure: 1. wire core; 11. stripping end; 2. centering assembly; 21. special-shaped tube; 22. limiting tube; 23. extension plate; 24. limiting strip; 25. plastic strip; 26. spring sheet; 3. barrier assembly; 31. opening ring; 32. bending tube; 33. concave end; 34. support rod; 35. sphere; 36. metal sleeve; 4. sheath; 5. fixing mechanism; 51. fixing block; 52. shell; 53. rectangular frame; 54. spring body; 55. guide block; 56. protective tube; 6. joining mechanism; 61. connecting shell; 62. disk; 63. threaded tube; 64. middle tube; 65. edge tube; 66. extension hole; 7. protective assembly; 71. latch; 72. support ring; 73. press-fit ring; 74. drag reduction ball; 75. steel wire strip; 76. steel wire ring. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] First embodiment: Figure 1-Figure 5 As shown, the present invention provides a technical solution: a wear-resistant and tensile-resistant power cable, comprising a core 1, the interior of the core 1 is a stranded wire structure made of multiple copper wires twisted together, the exterior of the core 1 is coated with a cross-linked polyethylene insulation tube, and also includes:

[0044] A centering component 2 is fixedly mounted on the outer surface of the wire core 1, and a barrier component 3 is fixedly connected to the outer surface of the centering component 2. The centering component 2 is used for positioning between multiple wire cores 1. The barrier component 3 is a tubular structure supported by a metal material, and a sheath 4 is fixedly connected to the outer surface of the barrier component 3;

[0045] A fixing mechanism 5, the fixing mechanism 5 is fixedly installed at the end surface of the blocking component 3, and a protective component 7 is fixedly connected to the outer surface of the fixing mechanism 5, and the protective component 7 is used for external protection when the cable is dragged as a whole;

[0046] A joining mechanism 6, which is fixedly mounted on the inner side of the fixing mechanism 5, and is used for fixing the end face of the wire core 1 and guiding the joining of the wire core 1 and the cable connector;

[0047] The centering component 2 includes a special-shaped tube 21, which is fixedly mounted on the outer surface of the wire core 1, and the outer surface of the special-shaped tube 21 is fixedly connected to the limiting tube 22, and the inner side of the limiting tube 22 is fixedly connected to an extension plate 23, and one end of the extension plate 23 away from the limiting tube 22 is fixedly connected to a limiting strip 24, and the inner side of the extension plate 23 is fixedly connected to a plastic strip 25, and the inner side of the limiting tube 22 is fixedly connected to a spring sheet 26;

[0048] The gap between the special-shaped tube 21 and the wire core 1 is filled with silicone rubber coating, the gap between the special-shaped tube 21 and the limiting tube 22 is filled with hemp rope and cable filling particles, and the gap between the sheath 4 and the limiting tube 22 is filled with silicone rubber coating.

[0049] When in use, the limiting tube 22, the blocking component 3 and the sheath 4 form an outer protective structure, and the fixing mechanism 5 is used to seal and fix the protective structure. A plurality of injection ports are provided on the surface of the sheath 4 for injecting silicone coating into the position between the limiting tube 22 and the sheath 4. After the silicone coating is shaped, a sealed protective structure is formed to prevent external gas and liquid from entering and causing insulation interference. The special-shaped tube 21 blocks the plurality of wire cores 1. The interior of the special-shaped tube 21 is filled with hemp rope for centering and stabilizing the overall structure. The interior of the special-shaped tube 21 is filled with silicone coating, and an inner centering structure is formed after the coating is shaped. The inner side surface of the special-shaped tube 21 and the space between the special-shaped tube 21 are filled with easy-to-flow cable particles. The cable particles improve the overall stability of the cable. At the same time, when the outer protective structure is broken by tension, the inner centering structure will not be damaged by tension, thereby solving the problem that the tight connection between the outer protective structure and the inner centering structure of the cable may easily cause the cable to be torn as a whole and cause serious accidents.

[0050] Second embodiment: Figure 5 , Figure 6 As shown, the special-shaped tube 21 is fixedly installed on the outer surface of the wire core 1, the outer surface of the special-shaped tube 21 is fixedly connected to the limiting tube 22, the inner side surface of the limiting tube 22 is fixedly connected to the extension plate 23, the end of the extension plate 23 away from the limiting tube 22 is fixedly connected to the limiting strip 24, the inner side surface of the extension plate 23 is fixedly connected to the plastic strip 25, and the inner side surface of the limiting tube 22 is fixedly connected to the spring sheet 26;

[0051] The gap between the special-shaped tube 21 and the wire core 1 is filled with silicone rubber coating, the gap between the special-shaped tube 21 and the limiting tube 22 is filled with hemp rope and cable filling particles, and the gap between the sheath 4 and the limiting tube 22 is filled with silicone rubber coating;

[0052] The blocking assembly 3 includes an open hole ring 31, which is sleeved on the outer surface of the limiting tube 22. A bending cylinder 32 is fixedly connected to one side of the surface of the open hole ring 31, and an inner concave end 33 is provided on the side of the bending cylinder 32 away from the open hole ring 31. The blocking assembly 3 also includes a support rod 34, one end of the support rod 34 is fixedly connected to a sphere 35, and the other end of the support rod 34 is fixedly installed on the surface of the open hole ring 31, and a metal sleeve 36 is fixedly connected to the surface of the support rod 34.

[0053] When in use, the perforated ring 31 is used to connect the bending cylinder 32 and the metal sleeve 36. The outer surface of the perforated ring 31 is in close contact with the inner side of the sheath 4. The inner surface of the perforated ring 31 is in close contact with the outer surface of the limiting tube 22. The position between the limiting tube 22 and the sheath 4 is injected with a shaping silicone coating. The openings on the surface of the perforated ring 31 are conducive to the flow and filling of the coating. The extension plate 23 and the limiting strip 24 are used to limit the special-shaped tube 21. The special-shaped structure of the special-shaped tube 21 and the matching of the limiting tube 22 effectively improve The plastic strip 25 and the spring sheet 26 are embedded in the interior of the limiting tube 22, which increases the rigidity of the limiting tube 22 made of plastic. At the same time, the cable as a whole can be easily bent and transported without being easily torn. The sphere 35 is rotatably installed inside the concave end 33. The metal sleeve 36, the perforated ring 31 and the bending cylinder 32 form a skeleton structure, which can effectively reduce external impact damage and make the cable easy to bend.

[0054] The third embodiment: Figure 6 , Figure 7 As shown, a bending cylinder 32 is fixedly connected to one side of the surface of the hole ring 31, and a concave end 33 is provided on the side of the bending cylinder 32 away from the hole ring 31. The barrier assembly 3 also includes a support rod 34, one end of the support rod 34 is fixedly connected to a sphere 35, and the other end of the support rod 34 is fixedly installed on the surface of the hole ring 31, and a metal sleeve 36 is fixedly connected to the surface of the support rod 34;

[0055] The fixing mechanism 5 includes a fixing block 51, which is fixedly installed on the end surface of the blocking component 3. The surface of the fixing block 51 is fixedly connected to a shell 52, and the surface of the shell 52 is fixedly connected to a rectangular frame 53. The fixing mechanism 5 also includes a spring body 54, one end of the spring body 54 is fixedly installed on the inner side of the rectangular frame 53, and the other end of the spring body 54 is fixedly connected to a guide block 55. The outer surface of the shell 52 is fixedly connected to a protective tube 56.

[0056] When in use, the barrier component 3 as a whole is a skeleton structure formed by a plurality of annular metal structures rotatably connected. Each skeleton unit is connected by rotation. A plurality of perforated rings 31 are sleeved between the limiting tube 22 and the sheath 4. The end face of the barrier component 3 is fixedly mounted on the surface of the fixing block 51 by welding, and the limiting tube 22 and the special-shaped tube 21 pass through the fixing block 51 and extend to the connecting mechanism 6 for fixation. The sphere 35 is embedded in the concave end 33 for rotatable installation. The outer surface of the limiting tube 22 fits tightly with the inner surface of the fixing block 51 and the inner surface of the inner surface of the rectangular frame 53. When silicone coating is poured between the sheath 4 and the limiting tube 22, the space between the sphere 35 and the concave end 33 is filled and shaped. After the silicone coating is cooled and shaped, when the cable is bent as a whole, the space between the sphere 35 and the concave end 33 can still be bent to a certain extent. However, due to the restrictions of the metal sleeve 36 and the bending cylinder 32, the cable is difficult to be torn, thereby effectively improving the overall tensile performance of the cable.

[0057] Fourth embodiment: Figure 7 , Figure 8 , Fig. 9 As shown, the fixing block 51 is fixedly installed at the end surface of the blocking component 3, the surface of the fixing block 51 is fixedly connected to the shell 52, the surface of the shell 52 is fixedly connected to the rectangular frame 53, the fixing mechanism 5 also includes a spring body 54, one end of the spring body 54 is fixedly installed on the inner side of the rectangular frame 53, the other end of the spring body 54 is fixedly connected to the guide block 55, and the outer surface of the shell 52 is fixedly connected to the protective tube 56;

[0058] The end face of the wire core 1 is provided with a stripping end 11, and the coupling mechanism 6 includes a connecting shell 61, which is fixedly installed on the bottom of the guide block 55, and the stripping end 11 of the wire core 1 extends to the inner side of the connecting shell 61. The coupling mechanism 6 also includes a disk body 62, and the surface of the disk body 62 is fixedly connected with an extension hole 66, and the disk body 62 is fixedly installed on the inner side of the connecting shell 61. A threaded tube 63 is fixedly connected to the surface of the disk body 62 near the stripping end 11, a center tube 64 is fixedly connected to the middle position of the surface of the disk body 62, and an edge tube 65 is fixedly connected to the surface of the disk body 62 near the edge, and the end faces of the center tube 64 and the edge tube 65 both extend to the inner side of the fixing mechanism 5.

[0059] When in use, the stripping end 11 passes through the connecting shell 61 and the disc body 62 to the inside of the threaded tube 63, and the spring body 54 engages the rectangular frame 53 with the guide block 55, so that the connecting shell 61 and the shell body 52 can be elastically connected. The end face of the middle tube 64 extends to the inside of the special-shaped tube 21. The middle tube 64 is used to pour the silicone coating into the inside of the special-shaped tube 21, so that the special-shaped tube 21 and the multiple wire cores 1 are centered and aligned, and the end face of the edge tube 65 extends inwardly to the inside of the limiting tube 22. The edge tube 65 is used to The cable filling particles are poured to the position between the inner side of the limiting tube 22 and the special-shaped tube 21. The flow characteristics of the cable filling particles make it impossible for there to be a tight connection surface between the special-shaped tube 21 and the limiting tube 22. When the outside of the entire cable is subjected to a large pulling force, the elastic force of the spring body 54 prevents the connecting shell 61 from being subjected to a large pulling force. Even if the protective structure of the cable is pulled apart as a whole, since there is no rigid connection between the connecting shell 61 and the shell 52, the core 1 will not be pulled apart and damaged, thereby avoiding major accidents caused by leakage.

[0060] Fifth embodiment: Figure 7-10 As shown, the fixing block 51 is fixedly installed at the end surface of the blocking component 3, the surface of the fixing block 51 is fixedly connected to the shell 52, the surface of the shell 52 is fixedly connected to the rectangular frame 53, the fixing mechanism 5 also includes a spring body 54, one end of the spring body 54 is fixedly installed on the inner side of the rectangular frame 53, the other end of the spring body 54 is fixedly connected to the guide block 55, and the outer surface of the shell 52 is fixedly connected to the protective tube 56;

[0061] The protective component 7 includes a pin 71, the end face of which is fixedly mounted on the inner side face of the fixed block 51, the end of the pin 71 away from the fixed block 51 is fixedly connected to a support ring 72, the surface of the support ring 72 is rotatably connected to a drag reducing ball 74, the protective component 7 also includes a pressing ring 73, the pressing ring 73 is sleeved on the outer surface of the support ring 72, the surface of the pin 71 is fixedly connected to a steel wire strip 75, and the surface of the steel wire strip 75 is fixedly connected to a wire ring 76.

[0062] When in use, the bottom end of the latch 71 is welded and installed on the inner side of the fixing block 51. The obstruction of the latch 71 forms a large gap between the fixing block 51 and the support ring 72. The structure between the two fixing blocks 51 is divided into an internal centering structure and an external protective structure. The fixing block 51 fixes the two end faces of the external protective structure. When the cable is used for dragging, the surface of the cable is in direct contact with the ground. The outermost layer of the external protective structure, i.e., the sheath 4 and the silicone coating, are easily worn, and the connection between the fixing block 51 and the shell 52 is easily torn, resulting in The sealing becomes worse. In this device, multiple drag reducing balls 74 are placed in the internal groove of the support ring 72, and then the pressing ring 73 is pressed on the outer surface of the support ring 72, so that the multiple drag reducing balls 74 are limited. When the cable is dragged, the drag reducing balls 74 are in direct contact with the ground to reduce the friction resistance. The debris on the ground enters the steel wire 75 and is then discharged through the pin 71, thereby effectively reducing the friction resistance of the cable when it is dragged, and solving the problem that the raised protective wear-resistant structure on the outer surface of the cable will cause the cable to wear and tear due to excessive resistance when dragged.

[0063] Sixth embodiment: Figure 1-Figure 10 As shown, a method for preparing a wear-resistant and tensile-resistant power cable comprises the following steps:

[0064] Step 1, manufacturing the wire core 1, at room temperature, drawing the copper rod into a copper wire, heating and keeping the copper wire warm, and then cooling the copper wire naturally, twisting the copper wire by twisting multiple single wires to form a copper stranded wire, using a traction machine to pull the copper stranded wire to be coated into the interior of an injection molding extruder to be coated with a hot-melt cross-linked polyethylene material, and forming a cross-linked polyethylene tube after cooling and shaping, thereby completing the preparation of the wire core 1, and opening a stripping end 11 on the end face of the wire core 1;

[0065] Step 2: Install the centering structure. Put plastic and rubber particles into the injection molding extruder. The hot melt plastic is formed into a limit tube 22 and a special-shaped tube 21 with a special-shaped cross-section structure through a die. During the extrusion molding process, the plastic strip 25 is embedded into the inner side of the limit tube 22 near the middle, and the spring sheet 26 is embedded into the inner side of the limit tube 22 near the edge. The formed special-shaped tube 21 is pulled through the inner side of the limit tube 22 to complete the installation of the centering structure of the wire core 1.

[0066] Step 3: Install the protective structure. The perforated ring 31 is welded and fixedly installed on one side of the inner concave end 33 of the bending cylinder 32. A plurality of spheres 35 are embedded inside the inner concave end 33. A plurality of support rods 34 are fixedly installed on the surface of the metal sleeve 36 of the annular structure. The end faces of the support rods 34 are then welded to the spheres 35. The protective structure is then sleeved on the outer surface of the limiting tube 22 as a whole, and the sheath 4 is sleeved on the outside of the protective structure as a whole.

[0067] Step 4: pouring and shaping. Fix the end faces of the limiting tube 22 and the special-shaped tube 21 on the surface of the connecting shell 61. At this time, the center tube 64 extends to the middle position of the inner side of the special-shaped tube 21, and the edge tube 65 extends to the position between the limiting tube 22 and the special-shaped tube 21. Pour silicone coating into the interior of the center tube 64, pour cable filling particles into the interior of the edge tube 65, and pour silicone coating into the injection hole of the sheath 4. After the coating cools, the overall shaping of the cable is completed.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A wear-resistant and tensile-resistant power cable, comprising a core (1), characterized in that: The interior of the wire core (1) is a stranded wire structure formed by twisting a plurality of copper wires, the exterior of the wire core (1) is coated with a cross-linked polyethylene insulation tube, and further comprises: A centering component (2), the centering component (2) being fixedly mounted on the outer surface of the wire core (1), the outer surface of the centering component (2) being fixedly connected to a barrier component (3), the centering component (2) being used for positioning between a plurality of wire cores (1), the barrier component (3) being a tubular structure supported by a metal material, the outer surface of the barrier component (3) being fixedly connected to a sheath (4); A fixing mechanism (5), the fixing mechanism (5) being fixedly mounted at an end surface of the barrier component (3), the outer surface of the fixing mechanism (5) being fixedly connected to a protective component (7), the protective component (7) being used for external protection when the cable is dragged as a whole; A joining mechanism (6), the joining mechanism (6) being fixedly mounted on the inner side surface of the fixing mechanism (5), the joining mechanism (6) being used for fixing the end surface of the wire core (1) and guiding the joining of the wire core (1) and the cable connector; The centering component (2) comprises a special-shaped tube (21), the special-shaped tube (21) is fixedly mounted on the outer surface of the wire core (1), the outer surface of the special-shaped tube (21) is fixedly connected to a limiting tube (22), the inner side surface of the limiting tube (22) is fixedly connected to an extension plate (23), one end of the extension plate (23) away from the limiting tube (22) is fixedly connected to a limiting strip (24), the inner side surface of the extension plate (23) is fixedly connected to a plastic strip (25), and the inner side surface of the limiting tube (22) is fixedly connected to a spring sheet (26); The gap between the special-shaped tube (21) and the wire core (1) is filled with silicone rubber coating, the gap between the special-shaped tube (21) and the limiting tube (22) is filled with hemp rope and cable filling particles, and the gap between the sheath (4) and the limiting tube (22) is filled with silicone rubber coating.

2. The wear-resistant and tensile-resistant power cable according to claim 1, characterized in that: The barrier assembly (3) comprises an open hole ring (31), the open hole ring (31) being sleeved on the outer surface of the limiting tube (22), a bending cylinder (32) being fixedly connected to one side of the surface of the open hole ring (31), and a concave end (33) being provided on the side of the bending cylinder (32) away from the open hole ring (31).

3. The wear-resistant and tensile-resistant power cable according to claim 2, characterized in that: The barrier assembly (3) further comprises a support rod (34), one end of which is fixedly connected to a sphere (35), the other end of which is fixedly mounted on the surface of the perforated ring (31), and the surface of the support rod (34) is fixedly connected to a metal sleeve (36).

4. The wear-resistant and tensile-resistant power cable according to claim 3, characterized in that: The fixing mechanism (5) comprises a fixing block (51), the fixing block (51) being fixedly mounted on an end surface of the barrier component (3), the surface of the fixing block (51) being fixedly connected to a shell (52), and the surface of the shell (52) being fixedly connected to a rectangular frame (53).

5. The wear-resistant and tensile-resistant power cable according to claim 4, characterized in that: The fixing mechanism (5) further comprises a spring body (54), one end of the spring body (54) being fixedly mounted on the inner side surface of the rectangular frame (53), the other end of the spring body (54) being fixedly connected to a guide block (55), and the outer surface of the housing (52) being fixedly connected to a protective tube (56).

6. The wear-resistant and tensile-resistant power cable according to claim 5, characterized in that: The end surface of the wire core (1) is provided with a stripping end (11), the joining mechanism (6) comprises a connecting shell (61), the connecting shell (61) is fixedly mounted on the bottom of the conducting block (55), and the stripping end (11) of the wire core (1) extends to the inner side surface of the connecting shell (61).

7. The wear-resistant and tensile-resistant power cable according to claim 6, characterized in that: The coupling mechanism (6) further comprises a disc (62), the surface of which is fixedly connected with an extension hole (66), the disc (62) being fixedly mounted on the inner side of the connecting shell (61), and the surface of which is fixedly connected with a threaded barrel (63) at a position close to the peeling end (11).

8. The wear-resistant and tensile-resistant power cable according to claim 7, characterized in that: A middle position of the surface of the disk body (62) is fixedly connected to a center tube (64), and a position of the surface of the disk body (62) close to an edge is fixedly connected to an edge tube (65), and the end surfaces of the center tube (64) and the edge tube (65) both extend to the inner side surface of the fixing mechanism (5).

9. A method for preparing a wear-resistant and tensile-resistant power cable is used to prepare a wear-resistant and tensile-resistant power cable as claimed in claim 8, characterized in that: The following steps are involved: Step 1, manufacturing the wire core (1), at room temperature, drawing a copper rod into a copper wire, heating and keeping the copper wire warm, and then cooling the copper wire naturally, twisting the copper wire by twisting multiple single wires to form a copper stranded wire, using a traction machine to pull the copper stranded wire to be coated into the interior of an injection molding extruder to be coated with a hot-melt cross-linked polyethylene material, and cooling and shaping to form a cross-linked polyethylene tube, thereby completing the preparation of the wire core (1), and opening a stripping end (11) on the end face of the wire core (1); Step 2, installing the centering structure, putting plastic and rubber particles into an injection molding extruder, and forming the hot-melt plastic into a stopper tube (22) and a special-shaped tube (21) with a special-shaped cross-section structure through a die. During the extrusion molding process, the plastic strip (25) is embedded into the inner side surface of the stopper tube (22) near the middle, and the spring sheet (26) is embedded into the inner side surface of the stopper tube (22) near the edge. The formed special-shaped tube (21) is pulled through the inner side surface of the stopper tube (22), and the installation of the centering structure of the wire core (1) is completed; Step 3: installing the protective structure. The perforated ring (31) is welded and fixedly installed on one side of the inner concave end (33) of the bending cylinder (32). A plurality of spheres (35) are embedded inside the inner concave end (33). A plurality of support rods (34) are fixedly installed on the surface of the metal sleeve (36) of the annular structure. The end faces of the support rods (34) are then welded to the spheres (35). The protective structure is then sleeved on the outer surface of the limiting tube (22), and the sheath (4) is sleeved on the outside of the protective structure as a whole. Step 4: pouring and shaping. The end faces of the limiting tube (22) and the special-shaped tube (21) are fixedly mounted on the surface of the connecting shell (61). At this time, the middle tube (64) extends to the middle position of the inner side of the special-shaped tube (21), and the edge tube (65) extends to the position between the limiting tube (22) and the special-shaped tube (21). Silicone coating is poured into the interior of the middle tube (64), cable filling particles are poured into the interior of the edge tube (65), and silicone coating is poured into the injection hole of the sheath (4). After the coating cools, the overall shaping of the cable is completed.

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